It hasn't been the best year for the Jacksonville Jaguars or Philadelphia Eagles' defense. That isn't stopping their coordinators from getting sniffs at potential head-coaching jobs in the college ranks.

The evolution of the helmet

Take a look at photos documenting the evolution of the NFL helmet over the years.

Tucker said he's not interested in the job "at this time," according to the Florida Times-Union, but the conversation speaks to his bona fides as a potential head coach. Tucker has done a nice job overall in Jacksonville, despite a rough 2012 season, and is well regarded in NFL circles.

The Jaguars have struggled this season, but Eagles defensive coordinator Todd Bowles has endured even bigger problems since taking over the position from Juan Castillo at midseason. But Bowles will get a interview Monday for Temple University's head-coaching position, according to Temple's Yahoo! Rivals website, via Comcast SportsNet Philadelphia.

Bowles has been seen as an up-and-coming coach in the NFL, but his stock has taken a hit in 2012, like everyone else associated with this season's Eagles.